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MAVERICK [17]
4 years ago
12

6 (3x-1)-10x. with work please :)

Mathematics
1 answer:
STatiana [176]4 years ago
4 0
Hey there!
Let's break this expression into two parts:
6(3x-1) and -10x

To solve the first part, we need to use the distributive property which states:
a(b+c) = ab+ac

Applying that to this problem, we have:
6(3x) + 6(-1) =
18x - 6

Now, we can take that -10x and put it right back in:

18x - 6 - 10x

Combine like terms and subtract the 10x from the 18x to get:
8x - 6

Hope this helps!
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3y+10x-54=0 5y-2x-34=0<br><br> x=<br><br> y=
Blababa [14]
<h3>Answer:</h3><h2>x = 3 and y = 8 → (3, 8)</h2><h3>Step-by-step explanation:</h3>

\left\{\begin{array}{ccc}3y+10x-54=0&\text{add 54 to both sides}\\5y-2x-34=0&\text{add 34 to both sides}\end{array}\right\\\left\{\begin{array}{ccc}3y+10x=54\\5y-2x=34&\text{multiply both sides by 5}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}3y+10x=54\\25y-10x=170\end{array}\right}\ \ \ \ |\text{add both sides of the equations}\\.\ \ \ \ \ 28y=224\qquad\text{divide both sides by 28}\\.\ \ \ \ \ \ \ \dfrac{28y}{28}=\dfrac{224}{28}\\.\ \ \ \ \ \ \ \boxed{y=8}

\text{put the value of y to the first equation}\\\\3(8)+10x=54\\24+10x=54\qquad\text{subtract 24 from both sides}\\24-24+10x=54-24\\10x=30\qquad\text{divide both sides by 10}\\\dfrac{10x}{10}=\dfrac{30}{10}\\\boxed{x=3}

8 0
3 years ago
A: 105 <br> B : 1,050<br> C: 9,450<br> D: 21
charle [14.2K]

Answer:

1050

Step-by-step explanation:

We can use a  ratio to solve

First find how many jam

210 - 189 =21

We want to find how many jam for 10500 printed

21 jam              x jam

-----------       = ----------------

210 printed          10500 printed

Using cross products

21 * 10500 = 210x

Divide each side by 210

21*10500/210 =x

1050=x

4 0
3 years ago
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UkoKoshka [18]
B. 1,147, I’m not quite sure
8 0
3 years ago
Greg knows the mass of his geography book is 954 grams. How many kilograms are equal to 954 grams
GalinKa [24]

Answer:

0.954

Step-by-step explanation: 1 KG is 1,000 grams. So, if his geography book is 954 grams, it’s less than 1,000, so it would be a decimal, as 0.954.

4 0
2 years ago
A jewellery shop is having a sale. A bracelet is now reduced to £420. This is 70% of the original price. Work out the original p
salantis [7]

Answer:

Step-by-step explanation:

x is the original price.

420/x = 70% = 0.7

x = 420/0.7 = 600

Original price of bracelet was £600

6 0
4 years ago
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